no Dewey numbers in export?

Last time I exported to Excel, I got all my books with their Dewey numbers. This time, no Dewey numbers. Any thoughts on why not? Thanks.

What exactly are you seeing? Is the column "Dewey_Decimal" missing or is the column empty (i.e. all rows of the column is "" rather than say "823.914")

Closing. I have downloaded their file. Virtually every line has a DDC.